<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/Home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter='20'> 
        <!-- 输入框 -->
        <el-col :span='8'>
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
          <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
        </el-input>
        </el-col>
        <el-col :span='6'>
          <el-button type="primary" @click="goAddPage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 表格 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="90px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="170px">
          <template slot-scope="scope">
           {{scope.row.add_time|dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120px">
          <template slot-scope="scope">
            <el-button type="primary" size="small" icon="el-icon-edit"></el-button>
            <el-button type="danger" size="small" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!--分页-->
      <el-pagination
      background
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[5, 10, 15, 20]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
    </el-card>
  </div>
</template>


<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 查询列表参数
      goodslist: [],
      total: 0
    };
  },
  methods: {
    // 根据分页获取相对应的参数列表
    async getGoodsList() {
      const {data: res} = await this.$http.get(`goods`, {params: this.queryInfo});
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      }

      this.goodslist = res.data.goods;
      this.total = res.data.total;
    },

    // 当页数发生改变
    handleSizeChange(newsize) {
      this.queryInfo.pagesize = newsize;
      this.getGoodsList();
    },

    // 当页码发生改变
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },

    // 根据商品id删除商品
    async removeById(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(error => error);

      if (confirmResult !== 'confirm') {
        this.$message.info('已取消删除');
      }

      // 用户点击确定, 走业务逻辑
      const {data: res} = await this.$http.delete(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error('删除失败!');
      }

      this.$message.success('删除成功!');
      this.getGoodsList();
    },

    // 用户点击添加商品, 跳转到添加组件
    goAddPage() {
      this.$router.push('/goods/add');
    }
  },
  created() {
    this.getGoodsList();
  }
};
</script>


<style lang="less" scoped>
</style>